It seems a company called ExperCom is selling standard-specced MacBook Pros...pre-loaded with Windows XP. This is for those folks who want the beautiful Apple hardware and the ubiquitous Windows software without having to deal with Boot Camp themselves, I guess.
We all knew this was inevitable, and fighting it is pointless. Still...just looking at that page sends shivers up my spine. At least they're happy to note, "We don't support Windows XP - and neither does Apple. We'll install it for you, but, hey, we're Mac people, so we can't help answer Windows questions."
[Thanks, Dan K. Kinda.]